BY L. RODWAY. 211 



1913. 



lid! with a rostrum less than half length of capsule ; calyp- 

 tra very narrow ; peristome pale yellow, teeth lanceolate, 

 gradually tapering to a very slender apex; endostome 

 membrane deep, processes lanceolate, perforate, cilia 2-3, 

 very lo-ng. 



Leaves disticlious, pale splninervnm 



Leaves dispersed, dark Archerl 



Hypnodendron spininervum Hook. 

 Syn.: Isothecium spininervum Hook. Trachylomaarcuaf a Mitt, 



Stems ahouti 5 cm. Branch leaves distichous, light green, 

 shining, broadly ovate, acute, 2 mm., equal or slightly 

 oblique, surface minutely papillose, cells narrow linear. 

 Seta 4 cm. ; capsule inclined, slightly to much curved, 3.5 

 mm. : lid conic, rostrate, not half as long. 



Slopes of Mt. Wellingtcn, Gordon, Tasmans Peninsula. 



Hypnodendro7i Archer i Mitt 

 Svu. : Isotheciam Archer i Mitt. 



Habit of the last, but the leaves less distichous and du!:, 

 dark green. Leaves oblong-lanceolate, acute, oblique, 1.5 

 mm., surface smooth; nerve lost in the apex; cells rather 

 broader and thinner walled. Seta 3 cm. ; capsule nari-ow- 

 cylindric, 4 mm. ; lid conic. 



Not a well-defined species. 



Port Arthur, West Coast. 



Mniodendron Lindb. 



Robust, erect, dendroid; stem covered with matted 

 rhizoids, branches fascicled at the apex. Leaves lanceolatei 

 from a broad base, very acute, margin slightly thickened; 

 nerve bold, excurrent ; cells long, narrow linear. Capsule 

 cylindrio furrowed, pendulous on a long seta arising from 

 the base of the branches; lid acutely rostrate; calyptra 

 long, cylindric, cucullatei; exostome teeth lanceolate, 

 smooth, closely articled, commisural line very faint ; endos- 

 tome a deep membrane, the processes same length gaping 

 or perforate, cilia three, slender, also same length. 



The following forms are very closely related, and it is 

 doubtful to what extent they should be considered speci- 

 fically distinct. 

 Branches in a regular fascicle. 



Base of leaf broad comosum 



Base of leaf narrow ... comatum 



Branches in a dispersed fascicle Sieberi 



